Adaptation to climate change: trade-offs among responses to multiple stressors in an intertidal crustacean.

ABSTRACT: Trade-offs may influence both physiological and evolutionary responses to co-occurring stressors, but their effects on both plastic and adaptive responses to climate change are poorly understood. To test for genetic and physiological trade-offs incurred in tolerating multiple stressors, we hybridized two populations of the intertidal copepod Tigriopus californicus that were divergent for both heat and salinity tolerance. Starting in the F₂ generation, we selected for increased tolerance of heat, low salinity, and high salinity in replicate lines. After five generations of selection, heat-selected lines had greater heat tolerance but lower fecundity, indicating an energetic cost to tolerance. Lines selected for increased salinity tolerance did not show evidence of adaptati

SUBMITTER: Kelly MW 

PROVIDER: S-EPMC5039327 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature